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Transplatation resistance to adenovirus-induced hepatocellular carcinomas
Abstract:
Two transplantable hepatic carcinomas of the hamster contained CELO virus-induced TSTA, confirming the etiological role of this avian adenovirus in the induction of hepatic tumors. Transplantation resistnace could not be induced with oncogenic adenoviruses of human, simian, or canine origin.
Insights
CELO virus, an avian adenovirus, was confirmed to cause hepatic tumors in hamsters by inducing tumor-specific transplantation antigen (TSTA). Other adenoviruses could not induce tumor resistance.
Area of Science:
- Oncology
- Virology
- Carcinogenesis
Background:
- Tumor-specific transplantation antigens (TSTA) are crucial for understanding tumor development and immune response.
- The etiological role of avian adenoviruses in tumor induction requires further investigation.
Purpose of the Study:
- To confirm the role of CELO virus in inducing hepatic tumors in hamsters.
- To investigate the potential of oncogenic adenoviruses from other species in inducing transplantation resistance.
Main Methods:
- Induction of hepatic tumors in hamsters.
- Detection of CELO virus-induced tumor-specific transplantation antigen (TSTA).
- Attempted induction of transplantation resistance using human, simian, and canine adenoviruses.
Main Results:
- Two transplantable hamster hepatic carcinomas exhibited CELO virus-induced TSTA.
- CELO virus was confirmed as an etiological agent in hepatic tumor induction.
- Oncogenic adenoviruses of human, simian, or canine origin failed to induce transplantation resistance.
Conclusions:
- CELO virus plays a significant role in the development of hepatic tumors.
- CELO virus-induced TSTA is a key factor in hamster hepatic carcinogenesis.
- Transplantation resistance cannot be induced by oncogenic adenoviruses from human, simian, or canine origins.